BioMedical Admissions Test (BMAT) Practice Test 2025 - Free BMAT Practice Questions and Study Guide

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In transformer calculations, what does 'Ip' denote?

Potential difference across primary coil

Current in primary coil

In transformer calculations, 'Ip' denotes the current in the primary coil. The transformer operates on the principle of electromagnetic induction, where an alternating current in the primary coil generates a magnetic field, which induces a voltage in the secondary coil. The current in the primary coil (Ip) is crucial for determining how much power is transferred to the secondary coil, as power conservation must be maintained in an ideal transformer.

The relationship between the currents in the primary and secondary coils, along with the voltages, is described by the turns ratio, where the current in the primary coil is inversely proportional to the voltage across it compared to the secondary coil. This concept is central to understanding how transformers work, including their efficiency and characteristics in different electrical applications.

Understanding this relationship helps in practical applications like voltage regulation and energy distribution in electrical systems.

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Current in secondary coil

Potential difference across secondary coil

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